Drying-roll.



J. A. LAMP & S. C. STINER.

DRYING ROLL.

APPLIGATION FILED JAILSI, 1910.

977,410. Patented Nov 29, 1910.

tiniran sra'r ns A TT FFTQE.

JOSEPH A. LAMP AND SAVENIOUS C. STINER, OF MGKEESPORT, PENNSYLVANIA.

DRYING-ROLL.

T all whom it may concern:

Be it known that we, JOSEPH A. LAMP and Savnxious C. Srinnn, residentsof McKeesport, in the county of Allegheny and State of Pennsylvania,have invented a new and useful Improvement in Drying-Rolls; and we dohereby declare the following to be a full, clear, and exact descriptionthereof.

Our invention relates to rolls for drying or heating sheet-metalpreparatory to coating the same with tin or other coating material.

In an application filed by us onthe first day of May, 1909, Serial No.493,4:17, we have set forth and claimed a method of treating platespreparatory to tinning or coating the same, and one of the steps of thatmethod consisted in passing the plates, after coming from the picklingor water bath, through heated rolls which act to dry the plates and atthe same time heat the same, and thereby dispensing with what iscommonly known as black annealing. The plates were passed directly fromthese drying or heating rolls to the cold rolls and were then incondition for coating.

Our present invention relates to these drying or heating rolls, and mostof the features of the present invention were illustrated in thedrawings of the above named application.

The present application was filed for the purpose of claiming the rollsset forth in the aforesaid application, together with certain additionalfeatures, all of which will be fully hereinafter set forth and claimed.

In the drawings Figure 1 is a plan view of a set of our improved dryingor heating rolls; Fig. 2 is a side elevation of the same; Fig. is anenlarged longitudinal section of one of the rolls and shows theconnections for supplying the heat thereto; Fig. 4: is a section on theline 4 d Fig. 3, and Fig. 5 is a section on the line 55 Fig. 3. x

In the drawings the numeral 2 designates a suitable stand or housing tosupport the rolls and form the proper bearings therefor. Any suitablenumber of rolls may be employed and in the present instance, we haveillustrated four sets. The rolls 3, as more clearly illustrated in Fig.3, comprise the hollow $116114: of suitable diameter and thickness, andare preferably formed of cast-iron or cast-steel, although we do notwish to limit ourselves to any particular metal or even that they beformed of cast-metal. The

Specification of Letters Patent.

Application filed January 81, 1910.

Patented Nov. 29, 1910. Serial No. 541,046.

roll 3 has the main cylindrical working face 5 with which the sheetscome in contact in passing through the rolls, and at the ends of saidroll just beyond the working face 5, are the reduced portions 6 ofsmaller diameter than the main working portion 5 of the roll. This formsthe abrupt shoulders? at each end of the roll just beyond the workingfaces. The object of these reduced portions 6 will be fully hereinafterdisclosed. The roll is cast with the spiders 8 at each end thereof, andprojecting from said spiders are the necks 9 with the elongatedneck-portions 10 projecting beyond the same. The elongated neck-portions10 form the ournals of the roll and are j ournaled within suitablebearings 11 in the housings 2. One of the elongated neck-portions 10 islonger than the other and secured thereto is the sprocket wheel 12 fordriving the roll as hereinafter set forth.

Secured to the neck-portions 9 of the roll are the fenders or guards 13,said fenders being illustrated as secured in place by the set screws 14so that said fenders may be adjustable on the neck-portions 9 atdifferent distances from the end of the roll 3.

In order to provide for the introduction of heat within the roll 3 toheat the working faces thereof, we have illustrated a means of effectingthis by the use of gaseous fuel, although we do not wish to confineourselves to the employment of any particular kind of fuel, or in factto any particular way of heating the roll. Accordingly the burner 15 isemployed which in reality is a pipe with apertures 16 formed therein andlocated within the cylindrical shell l of the roll. The pipe 15 extendsthrough the hollow neck portions of the roll and is supported withoutcoming in contact with the roll journals so that there is no frictionalcontact of the same with said pipe when the roll is rotated. One end ofthe pipe 15 is closed by the cap 17 and at the opposite end of the pipeor burner is the mixer 18. The gas is supplied from a main supply pipe19, which has the branch-pipes 20 leading therefrom, which enter themixer 18, and said branch-pipes are controlled by valves 21.

In the construction illustrated only the lower rolls of the differentsets are powerdriven, and for this purpose the shaft 22, journaled inthe housings, has the sprocketwheel 23 which is connected up bydrivingchain 24 to any suitable source of power.

The shaft 22 carries at its ends the sprocketwheels 25 and 26. Thesprocketqvheel 25 has the chain'QT'which passes up" and around thesprocket-wheel 28 for driving an inner roll and outer roll. Thesprocket-wheel 26 has the chain 29 which engages the sprocketwheels 30to drive an inner and outer roll. The upper rolls are driven by frictionand are held in contact with the lower rolls by means of the springs 31,which engage the bearing-boxes 32 which support the upper rolls. Theadjusting screws 33 are employed for regulating the tension of thesprings 31.

In the use of-our invention, the rolls are heated by turning on the gasand lighting the burners 15. When the rolls are properly heated thesheets or plates, as they come from the pickling bath or washing trough,are fed to the rolls?) and in their passage through said rolls'are driedand heated to a certain degree so that when they emerge therefrom themoisture has been entirely removed, and the plates have asurface whichenables them to be-passed directly to the cold-rolls without the step ofblack anneal ing. As the rolls are open-ended, and the combustion of thegas takes place within the rolls for heating the same, a draft iscreated through the rolls which tends to cause 'the flame and productsofcombustion to escape at the ends of the roll where said rolls will besubjected to the greatest amount of heat. In order to, prevent thisincreased heat at the ends of the rolls from unduly heating the workingfaces of the roll at the ends thereof, we employ the reduced porti0ns'6at the ends of the rollswhich absorb this increased heat and protect theactual working face 5 of the roll. If these reduced portions'at the endsof: the rolls (rare omitted, the heat at the ends of the roll will tendto expand the roll-at its ends and increase its diameter at the endportions over the diam eter of the intermediate portions'of the roll.This increase in'diameter of the roll'at the ends would not givean evenworking surface and the plates passing through the rolls would not bebrought into full cont-act with the rolls at its intermediate portionsand consequently would not be properly dried or heated. Thereducedportions 6 protect the working face of the roll from this intenseheat at the ends of the roll and consequently the working face of theroll remains at a uniform diameter throughout, and its whole face indirect contact with the entire surface of the sheet passing through it.

The fenders or guards 13 act to protect the journals of the roll fromthe heat emitted from the ends of the roll and consequently the journalsdo not heat up and give trouble from overheated bearings. In additionthese fenders 13 act as dampers, as they may be moved to and from theend openings of the roll, and in this way the draft may be regulated andthe heat of the roll accurately controlled. Another point of advantageof our invention lies in the elongated neck-portions 10 which are atsuch adistance from the heat that they are not materially affected bythe same, but the neck-portions 9 of larger diameter absorb this heat,and as they do not form the j'OUllIltllS no objection arises from theirbeing overheated.

lVhat we claim is:

1. A roll for the drying and heating of sheet-metal preparatory tocoating, comprising a cylindrical shell with open ends, means forintroducing heat into the interior thereof, and the outer ends of saidroll being of smaller diameter than the working or intermediate faces.

2. A roll for drying and heating sheetmetal preparatory to coating,comprising a cylindrical shellwith'open ends, means for introducing heatto the interior thereof, and the outer ends of said roll being ofsmaller diameter than the working or intermediate faces and formingshoulders on said roll.

3. A roll for drying and heating sheetmetal? preparatory to coating,comprising a cylindricalshell with open ends means for introducing heatto theinterior thereof. necks extending beyond the ends of said shell,and fenders on said necks.

at. A roll for drying and heating sheetmetal preparatory to coating,comprising a cylindrical shell with open ends, means for introducingheat to the interior thereof, necks extending beyond the ends of saidshell, and adjustable fenders on said necks.

A roll for drying and heating sheetmetal preparatory to coating,comprising a cylindrical-shell with open ends, means for introducingheat to the interior thereof. necks extending beyond the ends of saidshell, said necks having elongated neck-portions of smaller diameterthan the main body portion of said necks to form journals for said roll.

In testimony whereof, we the said Josnrii A. LAMP and Savnxrous C.S'IINER have hereunto set our hands.

JOSEPH A. LAMP. SAVEN'IOUS C. STINER. \Vitnesses THOS. J. LEWIS, A. M.SIMON.

